One common challenge with fuzz testing of advanced automotive systems, such as infotainment systems, connectivity units, and digital cockpits, is to be able to properly monitor the target system for exceptions, which can then be further analyzed to identify vulnerabilities. Often in-band instrumentation is used to monitor the target system, i.e., the same protocol being fuzzed is used for instrumentation. For example, using valid-case instrumentation, where a correct valid message is sent to the target system after a fuzzed message and the corresponding response is observed, it is possible to determine whether the target system is behaving correctly or not. However, this limited in-band instrumentation can lead to several exceptions being missed, such as memory leaks, zombie processes or core dumps.